/usr/lib/x86_64-linux-gnu/pkgconfig/libtiff-4.pc is in libtiff5-dev 4.0.3-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | prefix=/usr
exec_prefix=${prefix}
libdir=${prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include/x86_64-linux-gnu
Name: libtiff
Description: Tag Image File Format (TIFF) library.
Version: 4.0.3
Libs: -L${libdir} -ltiff
Libs.private: -llzma -ljbig -ljpeg -lz
Cflags: -I${includedir}
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